Damn, 10 million steem can really do some good in Steem.
I of course will first create multiple accounts under my control and power them up with the 10 million steem. All the steem would be powered up.
With the puppet orca/whale accounts, I'd support various dapps and initiatives via delegations. I would also set out a manifesto for the types of witnesses i will vote for. "want my witness vote? fulfill the following as a witness .etc"
Delegations would work the same way as well. "Fulfill the following and i will consider delegating"..
A fraction of the Steem would be used for a special account that i'd used to start my own user adoption drive. Where I would then market steem with and have them apply for an account from me (just like steemit.inc signup) but with much more stringent requirements and much more instant signups. Perhaps I would focus on Medium.com writers since that makes the most sense. Medium.com is an equally platform that most of the entrepreneurial writers are on.
With 10 million steem I pretty dont need to worry about paying for living expenses so I now have way more time to focus on evangelising Steem to the masses. Hopefully be the marketing force that steemit deserved.